1.查询表的相关信息
查询结果如下：
查询脚本如下：
select tt1.owner,
tt1.table_name,
tt1.comments,
tt1.last_analyzed,
tt1.num_rows,
tt2.colcnt
from (select t1.owner,
t1.table_name,
c1.comments,
t1.last_analyzed,
t1.num_rows
from all_tables t1, ALL_TAB_COMMENTS c1
where t1.owner = c1.owner
and t1.table_name = c1.table_name) tt1,
(select t5.OWNER, t5.TABLE_NAME, count(1) as colcnt
from dba_tab_columns t5
where t5.OWNER not in
('SYS', 'SYSTEM', 'OUTLN', 'DIP', 'ORACLE_OCM', 'DBSNMP',
'APPQOSSYS', 'WMSYS', 'EXFSYS', 'CTXSYS', 'XDB', 'ANONYMOUS',
'ORDSYS', 'ORDDATA', 'ORDPLUGINS', 'SI_INFORMTN_SCHEMA',
'MDSYS', 'OLAPSYS', 'MDDATA', 'SPATIAL_WFS_ADMIN_USR',
'SPATIAL_CSW_ADMIN_USR', 'SYSMAN', 'MGMT_VIEW', 'FLOWS_FILES',
'APEX_PUBLIC_USER', 'APEX_030200', 'OWBSYS', 'OWBSYS_AUDIT',
'SCOTT', 'HR', 'OE', 'IX', 'SH', 'PM', 'BI', 'XS$NULL')
group by t5.OWNER, t5.TABLE_NAME) tt2
where tt1.owner = tt2.owner
and tt1.table_name = tt2.table_name
order by tt1.owner, tt1.table_name
2.查询字段相关信息
查询结果如下：
查询脚本如下：
select ttt1.owner,
ttt1.table_name,
ttt1.column_name,
ttt1.DATA_TYPE,
ttt1.comments,
(case ttt2.constraint_type
when 'P' THEN
'Y'
ELSE
'N'
END) "是否主键",
(case ttt3.constraint_type
when 'R' THEN
'Y'
ELSE
'N'
END) "是否外键",
(case ttt4.constraint_type
when 'U' THEN
'Y'
ELSE
'N'
END) "是否唯一值",
ttt1.NULLABLE
from (select tt1.owner,
tt1.table_name,
tt1.column_name,
tt1.DATA_TYPE,
tt1.COLUMN_ID,
tt2.comments,
tt1.NULLABLE
from (select t2.owner,
t2.table_name,
t2.column_name,
t2.DATA_TYPE,
t2.COLUMN_ID,
t2.NULLABLE
from all_tab_columns t2
where t2.owner not in
('SYS', 'SYSTEM', 'OUTLN', 'DIP', 'ORACLE_OCM',
'DBSNMP', 'APPQOSSYS', 'WMSYS', 'EXFSYS', 'CTXSYS',
'XDB', 'ANONYMOUS', 'ORDSYS', 'ORDDATA', 'ORDPLUGINS',
'SI_INFORMTN_SCHEMA', 'MDSYS', 'OLAPSYS', 'MDDATA',
'SPATIAL_WFS_ADMIN_USR', 'SPATIAL_CSW_ADMIN_USR',
'SYSMAN', 'MGMT_VIEW', 'FLOWS_FILES',
'APEX_PUBLIC_USER', 'APEX_030200', 'OWBSYS',
'OWBSYS_AUDIT', 'SCOTT', 'HR', 'OE', 'IX', 'SH', 'PM', 'BI',
'XS$NULL')) tt1,
ALL_COL_COMMENTS tt2
where tt1.owner = tt2.owner
and tt1.table_name = tt2.table_name
and tt1.column_name = tt2.column_name) ttt1
left join
(select col.owner, col.table_name, col.column_name, con.constraint_type
from all_constraints con, all_cons_columns col
where con.constraint_name = col.constraint_name
and con.owner = col.owner
and con.table_name = col.table_name
and con.constraint_type = 'P') ttt2 on ttt1.owner = ttt2.owner
and ttt1.table_name =
ttt2.table_name
and ttt1.column_name =
ttt2.column_name
left join
(select col.owner, col.table_name, col.column_name, con.constraint_type
from all_constraints con, all_cons_columns col
where con.constraint_name = col.constraint_name
and con.owner = col.owner
and con.table_name = col.table_name
and con.constraint_type = 'R') ttt3 on ttt1.owner = ttt3.owner
and ttt1.table_name =
ttt3.table_name
and ttt1.column_name =
ttt3.column_name
left join
(select col.owner, col.table_name, col.column_name, con.constraint_type
from all_constraints con, all_cons_columns col
where con.constraint_name = col.constraint_name
and con.owner = col.owner
and con.table_name = col.table_name
and con.constraint_type = 'U') ttt4 on ttt1.owner = ttt4.owner
and ttt1.table_name =
ttt4.table_name
and ttt1.column_name =
ttt4.column_name
order by ttt1.owner, ttt1.table_name, ttt1.COLUMN_ID